... container 1.Outer PP, inner stainless steel 2.double wall , keep warm for 48 hours 3 BPA free, SGS FDA 2012 stainless ... steel double wall lunch box in 2 layer (bowl) keep food hotDetailed description: Drinkware Type: Vacuum Flasks & Thermoses Metal Type ... electrolysis 3,longtime insulation 4,food&soup available5. 2 hours keep warm.6. different layers to separate the rice, soup, dish, avoid ...